Grain-separator



D. GEISER. GRAIN SEPARATOR.

No. 43,766 Patented Aug. 9, 1864.

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n42 Nunms warns cu. PHOTO-UTHQ, WASH UNITED STATES PATENT OFFICE.

DANIEL GEISER, on WAYNESBOROUGH, PENNSYLVANIA.

GRAIN-SEPARATOFL Specification forming partof Letters Patent No. 43,766, dated August 9, 1864.

To all whom it may concern.-

Be it known that I, DANIEL Gnrs'nn, of Waynesborough, in-the county otqFranklin and State of Pennsylvania, have invented a new and Improved Grain-Separating Device for Thrashing-Machincs; and I do hereby declare that the following is a full, clean-and exact description of the same, reference being had to the accompanying drawings, making a part of this specifieation, in which- Figure 1 is a side sectional view of my invention, taken in the line as .r, Fig. '2; Fig. 2, aplan or top'vicw of the same,

Similar letters of reference indicate corresponding parts in the two figures.

This invention relates to a new and improved machine for separating grain from straw'as the latter is delivered from athrashlug-machine.

The object of the invention is to obtain a device for the purpose specified which will etfectually separate the loose grain from the straw while the latter is being conveyed away from the thrashin g-machine, and also separate all dust and foreign substances from the'grain.

To enable those skilled in the art, to fully understand and construct my invention, I will proceed to describe it. 1

A represents a box or case in which the upper svorkingvparts of'thc device are placed, which parts consist of a series of parallel bars, B, arranged in pairs and provided. with teeth a, both at .theirrup'per and lower edges, said teeth being slightly inclined. These bars-B are connected at ea'chend to cranksb on shafts U, which pass through the fro'ntand back part of the box A, said cranks having a different positionrelatively with each other, and each pair of bars being attached to corresponding cranks on the shafts G. Thesecranks have a different position in order" to enable. the several pairs of bars 15 to rise and fall consocu tively between bars D, which form a screen, the cranks, as one of the shafts O is turned, communicating a rising and falling, as well as a forward and backward movement to the bars B. The-bars D of the screen have'notched sides, as shown at c in Fig. 2, to admit of the grain passing down betweent-hem', while the bars B, by the movement communicated to them, carry the straw tothe outer end of the boxor'case A.

In each bar B, at its upper edge, there is placed one or more teeth, d, somewhat longer than the others, which serve to agitate and shake up the straw, so as to detach and loosen the grain in the same.

On the top of the box or case 'A.there is placed transversely a rock-shaft, E, provided With pendant teeth 0, which serve to scatter or spread the straw evenly on the bars B, preventing it from being carried by'the same in bunches or inuneven layers. This rock-shaft E is operated by the pitman f from a crank= shaft, F, which receives itsmotion by a belt or. gearing from the shaft 0, to which the driving-power is .a pplied.

G is a swin gin g pendent plate provided with vertical notches and placed transversely on thetop of the box or case A, directly'in front of the crankshaft E. This plate G serves to prevent loose straw from becoming detached from the main portion as it passes from the thrashing-machine on the bars B D, and said plate G may be composed of one ormore parts. If more than one part is used, each part should swing freely or independently of the other. The grain that passes between the bars 1) falls upon the bottom 9 of the boxor case A, and isv taken therefrom by the teeth a at the under sides of the bars B, and is dis; ehargednpon a screen, II, in a box orcase, --I,

on which the box or case A rests. At the outer'ends of the bars D there is placed a narrow metal screen,'J, which serves to admit of the free discharge of the straw, as well as the free passage of grain. through it. 1 The bars B D, it will be understood, are ofwood, and the metal screen J is necessary or qniteimportant at the ends of the bars D, as it will prevent grain from being carried over the on ter ends ot'the barsD. The screen II is inclined, and has a reciprocating rake or agitator, K, work.- ing'uponfitsupper surface and operated by a pitman, h,whicn is attached to a crank-shaft, L', and underneath the screen H there is placed an inclined plate orchute, M. Underneaththe chute M the fan'is placed, which expels from the grainall light foreign substances, the tailings being discharged into abox, N,

and the first and second quality of grain beingdischarged at the points-2' t", as shown in Fig, 1. The rake or agitator K effectually separates or loosens the grain from the heads tailin gs, and other foreign substances,va-nd the passage of the grain through the machine is "indicated in red.

In the box N there is placed a bar, lO', -pro. vided with a notched plate, j, at its sides, to

serve as a means to convey the tailings ;in't'o an inclined elevator-box, P, the elevators, of which are composed of two reciprocating-hairs,

Q, Q, operated from a crank-shaft, 1t, and from which a reeeprocating motion is communicatedto the bar 0 by means of friction or toothed gear S, aerank, k, a pitman, O, a.nd "a'l slide," (0. The box N'has a perforated bottom, I,

and a portion of the bottom of the elevator-4 box P is i also perforated, as shown at 171,8.(1 the bar Q is provided with teeth o, and has a notched plate, a, connected to it, precisely like the plate 7' of the bar 0, while thebar Q is also provided with teeth 0. By this means the dust is taken from the tailings while the same is being conveyed back to the thrashbig-machine.

Having thus described my invention, what I claim as new, and desire tog secure by Letters Patent, is-

1. The combination of the stationary notched set forth.

toothed bars B B and toothed rook-shaft E e,

constructed and operating as and for the purposes specified.

3. The swinging plate G, composed of one or more parts and placed on the box or case .A, when used in connection with the toothed bags B, for the purpose set forth.

The metal screen J, placed at the'onter ends of the bars I), when used in connection with the toothed bars B, for the purpose set forth i 5, The reciprocating bar 0, provided with notched platesj and fitted in a box, N, having a perforated bottom, I, for the purpose of conveying tho tailings into the elevator-box 1, as

. DANIEL GEISER.

Witnesses JOHN M Bomcnuiucn, ldi'o'nAEL M. STONER. 

